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  3. Mineral Resource Data System (MRDS)

Unnamed (near mouth of Port Camden)

Prospect in Alaska, United States with commodities Thorium, Uranium
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Alteration
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10000280
MRDS ID A010324
Record type Site
Current site name Unnamed (near mouth of Port Camden)

Geographic coordinates

Geographic coordinates: -133.9508, 56.80584 (WGS84)
Relative position Northeastern Kuiu Island. Consists of outcrops of Tertiary sandstone along the shoreline at the end of the peninsula that juts out between the mouth of Kadake Bay and the north end of Port Camden. Commonly referred to as the Port Camden occurrences. Coordinates are approximately the center of the radioactive occurrences. Localities 7 and 8 of Grybeck, Berg, and Karl (1984).

Site location context

Political divisions (FIPS codes)

Wade Hampton(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Petersburg D-6(quadrangle 1:63,360 scale)

Port Alexander NE(quadrangle 1:100,000 scale)

Petersburg(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Thorium Primary
Uranium Primary

Comments on the commodity information

  • Ore Material = Unidentified radioactive minerals
  • Ore Material = Unidentified radioactive minerals

Alteration

  • (Local) Unknown.

Mineral occurrence model information

Model code 204
USGS model code 30c
Deposit model name Sandstone U

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (youngest) Tertiary

Nearby scientific data

(1) Tgbe
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Tertiary Kootznahoo Formation consists of light brown, poorly sorted, non-marine, dolomitic sandstone that contains clay clasts, carbonized wood fragments, and dolomitic concretions. The sandstone ranges from silty, fine-grained and thin-bedded to medium- and coarse-grained; it is partly conglomeratic, and medium- to thick-bedded. Siderite, magnetite, pyrite, and apatite are present in some lithologies. All carbonized wood fragments show radioactivity when tested in place. Readings range from 2 to 50 times background. One sample yields eU of 1300, plus-or-minus 400 ppm uranium, and gamma eU of 2300, plus-or-minus 700 ppm uranium. Samples from a four-inch-thick bed of fine-grained Tertiary sandstone contained 11 and 12 ppm uranium and up to 30 percent magnetite. (Description summarized from Eakins, 1975; Dickinson, 1979; Dickinson and Campbell, 1982; and Dickinson and Pierson, 1988.)
  • Age = Tertiary or younger based on age of the host rock, the Tertiary Kootznahoo Formation.
  • Age = Host rock is Tertiary.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Probably inactive

Mining district

District name Kupreanof

Comments on the production information

  • Production Notes = None

Comments on the reserve resource information

  • Reserves = None

Comments on the workings information

  • Workings / Exploration = Block of 30 claims staked in 1976 and active until at least 1981 (U.S. Bureau of Mines, 1980). Little indication of any work since.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Dickinson, 1979 (USGS OF 79-1427); Dickinson and Campbell, 1982

General comments

Subject category Comment text
Deposit Model Name = Sandstone uranium (Cox and Singer, 1986; model 30c)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1998 H.C. Berg U.S. Geological Survey
Reporter 01-NOV-1998 D.J. Grybeck U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.